1 /* BSDI inet.c,v 2.3 1995/10/24 02:19:29 prb Exp */
3 * Copyright (c) 1983, 1988, 1993
4 * The Regents of the University of California. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 4. Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 static char sccsid[] = "@(#)inet6.c 8.4 (Berkeley) 4/20/94";
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
41 #include <sys/param.h>
42 #include <sys/socket.h>
43 #include <sys/socketvar.h>
44 #include <sys/ioctl.h>
46 #include <sys/protosw.h>
47 #include <sys/sysctl.h>
49 #include <net/route.h>
51 #include <net/if_var.h>
52 #include <netinet/in.h>
53 #include <netinet/ip6.h>
54 #include <netinet/icmp6.h>
55 #include <netinet/in_systm.h>
56 #include <netinet6/in6_pcb.h>
57 #include <netinet6/in6_var.h>
58 #include <netinet6/ip6_var.h>
59 #include <netinet6/pim6_var.h>
60 #include <netinet6/raw_ip6.h>
62 #include <arpa/inet.h>
75 char *inet6name(struct in6_addr *);
77 static char ntop_buf[INET6_ADDRSTRLEN];
79 static const char *ip6nh[] = {
140 "destination option",
338 static char *srcrule_str[] = {
342 "deprecated address",
344 "outgoing interface",
346 "public/temporary address",
348 "preferred interface",
358 * Dump IP6 statistics structure.
361 ip6_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
363 struct ip6stat ip6stat;
367 len = sizeof ip6stat;
369 memset(&ip6stat, 0, len);
370 if (sysctlbyname("net.inet6.ip6.stats", &ip6stat, &len, NULL,
373 warn("sysctl: net.inet6.ip6.stats");
377 kread(off, &ip6stat, len);
379 printf("%s:\n", name);
381 #define p(f, m) if (ip6stat.f || sflag <= 1) \
382 printf(m, (uintmax_t)ip6stat.f, plural(ip6stat.f))
383 #define p1a(f, m) if (ip6stat.f || sflag <= 1) \
384 printf(m, (uintmax_t)ip6stat.f)
386 p(ip6s_total, "\t%ju total packet%s received\n");
387 p1a(ip6s_toosmall, "\t%ju with size smaller than minimum\n");
388 p1a(ip6s_tooshort, "\t%ju with data size < data length\n");
389 p1a(ip6s_badoptions, "\t%ju with bad options\n");
390 p1a(ip6s_badvers, "\t%ju with incorrect version number\n");
391 p(ip6s_fragments, "\t%ju fragment%s received\n");
392 p(ip6s_fragdropped, "\t%ju fragment%s dropped (dup or out of space)\n");
393 p(ip6s_fragtimeout, "\t%ju fragment%s dropped after timeout\n");
394 p(ip6s_fragoverflow, "\t%ju fragment%s that exceeded limit\n");
395 p(ip6s_reassembled, "\t%ju packet%s reassembled ok\n");
396 p(ip6s_delivered, "\t%ju packet%s for this host\n");
397 p(ip6s_forward, "\t%ju packet%s forwarded\n");
398 p(ip6s_cantforward, "\t%ju packet%s not forwardable\n");
399 p(ip6s_redirectsent, "\t%ju redirect%s sent\n");
400 p(ip6s_localout, "\t%ju packet%s sent from this host\n");
401 p(ip6s_rawout, "\t%ju packet%s sent with fabricated ip header\n");
402 p(ip6s_odropped, "\t%ju output packet%s dropped due to no bufs, etc.\n");
403 p(ip6s_noroute, "\t%ju output packet%s discarded due to no route\n");
404 p(ip6s_fragmented, "\t%ju output datagram%s fragmented\n");
405 p(ip6s_ofragments, "\t%ju fragment%s created\n");
406 p(ip6s_cantfrag, "\t%ju datagram%s that can't be fragmented\n");
407 p(ip6s_badscope, "\t%ju packet%s that violated scope rules\n");
408 p(ip6s_notmember, "\t%ju multicast packet%s which we don't join\n");
409 for (first = 1, i = 0; i < 256; i++)
410 if (ip6stat.ip6s_nxthist[i] != 0) {
412 printf("\tInput histogram:\n");
415 printf("\t\t%s: %ju\n", ip6nh[i],
416 (uintmax_t)ip6stat.ip6s_nxthist[i]);
418 printf("\tMbuf statistics:\n");
419 printf("\t\t%ju one mbuf\n", (uintmax_t)ip6stat.ip6s_m1);
420 for (first = 1, i = 0; i < 32; i++) {
421 char ifbuf[IFNAMSIZ];
422 if (ip6stat.ip6s_m2m[i] != 0) {
424 printf("\t\ttwo or more mbuf:\n");
427 printf("\t\t\t%s= %ju\n",
428 if_indextoname(i, ifbuf),
429 (uintmax_t)ip6stat.ip6s_m2m[i]);
432 printf("\t\t%ju one ext mbuf\n",
433 (uintmax_t)ip6stat.ip6s_mext1);
434 printf("\t\t%ju two or more ext mbuf\n",
435 (uintmax_t)ip6stat.ip6s_mext2m);
436 p(ip6s_exthdrtoolong,
437 "\t%ju packet%s whose headers are not contiguous\n");
438 p(ip6s_nogif, "\t%ju tunneling packet%s that can't find gif\n");
440 "\t%ju packet%s discarded because of too many headers\n");
442 /* for debugging source address selection */
443 #define PRINT_SCOPESTAT(s,i) do {\
444 switch(i) { /* XXX hardcoding in each case */\
446 p(s, "\t\t%ju node-local%s\n");\
449 p(s,"\t\t%ju link-local%s\n");\
452 p(s,"\t\t%ju site-local%s\n");\
455 p(s,"\t\t%ju global%s\n");\
458 printf("\t\t%ju addresses scope=%x\n",\
459 (uintmax_t)ip6stat.s, i);\
464 "\t%ju failure%s of source address selection\n");
465 for (first = 1, i = 0; i < 16; i++) {
466 if (ip6stat.ip6s_sources_sameif[i]) {
468 printf("\tsource addresses on an outgoing I/F\n");
471 PRINT_SCOPESTAT(ip6s_sources_sameif[i], i);
474 for (first = 1, i = 0; i < 16; i++) {
475 if (ip6stat.ip6s_sources_otherif[i]) {
477 printf("\tsource addresses on a non-outgoing I/F\n");
480 PRINT_SCOPESTAT(ip6s_sources_otherif[i], i);
483 for (first = 1, i = 0; i < 16; i++) {
484 if (ip6stat.ip6s_sources_samescope[i]) {
486 printf("\tsource addresses of same scope\n");
489 PRINT_SCOPESTAT(ip6s_sources_samescope[i], i);
492 for (first = 1, i = 0; i < 16; i++) {
493 if (ip6stat.ip6s_sources_otherscope[i]) {
495 printf("\tsource addresses of a different scope\n");
498 PRINT_SCOPESTAT(ip6s_sources_otherscope[i], i);
501 for (first = 1, i = 0; i < 16; i++) {
502 if (ip6stat.ip6s_sources_deprecated[i]) {
504 printf("\tdeprecated source addresses\n");
507 PRINT_SCOPESTAT(ip6s_sources_deprecated[i], i);
511 printf("\tSource addresses selection rule applied:\n");
512 for (i = 0; i < 16; i++) {
513 if (ip6stat.ip6s_sources_rule[i])
514 printf("\t\t%ju %s\n",
515 (uintmax_t)ip6stat.ip6s_sources_rule[i],
523 * Dump IPv6 per-interface statistics based on RFC 2465.
526 ip6_ifstats(char *ifname)
528 struct in6_ifreq ifr;
530 #define p(f, m) if (ifr.ifr_ifru.ifru_stat.f || sflag <= 1) \
531 printf(m, (uintmax_t)ifr.ifr_ifru.ifru_stat.f, plural(ifr.ifr_ifru.ifru_stat.f))
532 #define p_5(f, m) if (ifr.ifr_ifru.ifru_stat.f || sflag <= 1) \
533 printf(m, (uintmax_t)ip6stat.f)
535 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
536 perror("Warning: socket(AF_INET6)");
540 strcpy(ifr.ifr_name, ifname);
541 printf("ip6 on %s:\n", ifr.ifr_name);
543 if (ioctl(s, SIOCGIFSTAT_IN6, (char *)&ifr) < 0) {
544 perror("Warning: ioctl(SIOCGIFSTAT_IN6)");
548 p(ifs6_in_receive, "\t%ju total input datagram%s\n");
549 p(ifs6_in_hdrerr, "\t%ju datagram%s with invalid header received\n");
550 p(ifs6_in_toobig, "\t%ju datagram%s exceeded MTU received\n");
551 p(ifs6_in_noroute, "\t%ju datagram%s with no route received\n");
552 p(ifs6_in_addrerr, "\t%ju datagram%s with invalid dst received\n");
553 p(ifs6_in_protounknown, "\t%ju datagram%s with unknown proto received\n");
554 p(ifs6_in_truncated, "\t%ju truncated datagram%s received\n");
555 p(ifs6_in_discard, "\t%ju input datagram%s discarded\n");
557 "\t%ju datagram%s delivered to an upper layer protocol\n");
558 p(ifs6_out_forward, "\t%ju datagram%s forwarded to this interface\n");
560 "\t%ju datagram%s sent from an upper layer protocol\n");
561 p(ifs6_out_discard, "\t%ju total discarded output datagram%s\n");
562 p(ifs6_out_fragok, "\t%ju output datagram%s fragmented\n");
563 p(ifs6_out_fragfail, "\t%ju output datagram%s failed on fragment\n");
564 p(ifs6_out_fragcreat, "\t%ju output datagram%s succeeded on fragment\n");
565 p(ifs6_reass_reqd, "\t%ju incoming datagram%s fragmented\n");
566 p(ifs6_reass_ok, "\t%ju datagram%s reassembled\n");
567 p(ifs6_reass_fail, "\t%ju datagram%s failed on reassembly\n");
568 p(ifs6_in_mcast, "\t%ju multicast datagram%s received\n");
569 p(ifs6_out_mcast, "\t%ju multicast datagram%s sent\n");
578 static const char *icmp6names[] = {
709 "multicast listener query",
710 "MLDv1 listener report",
711 "MLDv1 listener done",
712 "router solicitation",
713 "router advertisement",
714 "neighbor solicitation",
715 "neighbor advertisement",
717 "router renumbering",
718 "node information request",
719 "node information reply",
720 "inverse neighbor solicitation",
721 "inverse neighbor advertisement",
722 "MLDv2 listener report",
838 * Dump ICMP6 statistics.
841 icmp6_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
843 struct icmp6stat icmp6stat;
847 len = sizeof icmp6stat;
849 memset(&icmp6stat, 0, len);
850 if (sysctlbyname("net.inet6.icmp6.stats", &icmp6stat, &len,
853 warn("sysctl: net.inet6.icmp6.stats");
857 kread(off, &icmp6stat, len);
859 printf("%s:\n", name);
861 #define p(f, m) if (icmp6stat.f || sflag <= 1) \
862 printf(m, (uintmax_t)icmp6stat.f, plural(icmp6stat.f))
863 #define p_5(f, m) if (icmp6stat.f || sflag <= 1) \
864 printf(m, (uintmax_t)icmp6stat.f)
866 p(icp6s_error, "\t%ju call%s to icmp6_error\n");
868 "\t%ju error%s not generated in response to an icmp6 message\n");
870 "\t%ju error%s not generated because of rate limitation\n");
871 #define NELEM (int)(sizeof(icmp6stat.icp6s_outhist)/sizeof(icmp6stat.icp6s_outhist[0]))
872 for (first = 1, i = 0; i < NELEM; i++)
873 if (icmp6stat.icp6s_outhist[i] != 0) {
875 printf("\tOutput histogram:\n");
878 printf("\t\t%s: %ju\n", icmp6names[i],
879 (uintmax_t)icmp6stat.icp6s_outhist[i]);
882 p(icp6s_badcode, "\t%ju message%s with bad code fields\n");
883 p(icp6s_tooshort, "\t%ju message%s < minimum length\n");
884 p(icp6s_checksum, "\t%ju bad checksum%s\n");
885 p(icp6s_badlen, "\t%ju message%s with bad length\n");
886 #define NELEM (int)(sizeof(icmp6stat.icp6s_inhist)/sizeof(icmp6stat.icp6s_inhist[0]))
887 for (first = 1, i = 0; i < NELEM; i++)
888 if (icmp6stat.icp6s_inhist[i] != 0) {
890 printf("\tInput histogram:\n");
893 printf("\t\t%s: %ju\n", icmp6names[i],
894 (uintmax_t)icmp6stat.icp6s_inhist[i]);
897 printf("\tHistogram of error messages to be generated:\n");
898 p_5(icp6s_odst_unreach_noroute, "\t\t%ju no route\n");
899 p_5(icp6s_odst_unreach_admin, "\t\t%ju administratively prohibited\n");
900 p_5(icp6s_odst_unreach_beyondscope, "\t\t%ju beyond scope\n");
901 p_5(icp6s_odst_unreach_addr, "\t\t%ju address unreachable\n");
902 p_5(icp6s_odst_unreach_noport, "\t\t%ju port unreachable\n");
903 p_5(icp6s_opacket_too_big, "\t\t%ju packet too big\n");
904 p_5(icp6s_otime_exceed_transit, "\t\t%ju time exceed transit\n");
905 p_5(icp6s_otime_exceed_reassembly, "\t\t%ju time exceed reassembly\n");
906 p_5(icp6s_oparamprob_header, "\t\t%ju erroneous header field\n");
907 p_5(icp6s_oparamprob_nextheader, "\t\t%ju unrecognized next header\n");
908 p_5(icp6s_oparamprob_option, "\t\t%ju unrecognized option\n");
909 p_5(icp6s_oredirect, "\t\t%ju redirect\n");
910 p_5(icp6s_ounknown, "\t\t%ju unknown\n");
912 p(icp6s_reflect, "\t%ju message response%s generated\n");
913 p(icp6s_nd_toomanyopt, "\t%ju message%s with too many ND options\n");
914 p(icp6s_nd_badopt, "\t%ju message%s with bad ND options\n");
915 p(icp6s_badns, "\t%ju bad neighbor solicitation message%s\n");
916 p(icp6s_badna, "\t%ju bad neighbor advertisement message%s\n");
917 p(icp6s_badrs, "\t%ju bad router solicitation message%s\n");
918 p(icp6s_badra, "\t%ju bad router advertisement message%s\n");
919 p(icp6s_badredirect, "\t%ju bad redirect message%s\n");
920 p(icp6s_pmtuchg, "\t%ju path MTU change%s\n");
926 * Dump ICMPv6 per-interface statistics based on RFC 2466.
929 icmp6_ifstats(char *ifname)
931 struct in6_ifreq ifr;
933 #define p(f, m) if (ifr.ifr_ifru.ifru_icmp6stat.f || sflag <= 1) \
934 printf(m, (uintmax_t)ifr.ifr_ifru.ifru_icmp6stat.f, plural(ifr.ifr_ifru.ifru_icmp6stat.f))
935 #define p2(f, m) if (ifr.ifr_ifru.ifru_icmp6stat.f || sflag <= 1) \
936 printf(m, (uintmax_t)ifr.ifr_ifru.ifru_icmp6stat.f, pluralies(ifr.ifr_ifru.ifru_icmp6stat.f))
938 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
939 perror("Warning: socket(AF_INET6)");
943 strcpy(ifr.ifr_name, ifname);
944 printf("icmp6 on %s:\n", ifr.ifr_name);
946 if (ioctl(s, SIOCGIFSTAT_ICMP6, (char *)&ifr) < 0) {
947 perror("Warning: ioctl(SIOCGIFSTAT_ICMP6)");
951 p(ifs6_in_msg, "\t%ju total input message%s\n");
952 p(ifs6_in_error, "\t%ju total input error message%s\n");
953 p(ifs6_in_dstunreach, "\t%ju input destination unreachable error%s\n");
954 p(ifs6_in_adminprohib, "\t%ju input administratively prohibited error%s\n");
955 p(ifs6_in_timeexceed, "\t%ju input time exceeded error%s\n");
956 p(ifs6_in_paramprob, "\t%ju input parameter problem error%s\n");
957 p(ifs6_in_pkttoobig, "\t%ju input packet too big error%s\n");
958 p(ifs6_in_echo, "\t%ju input echo request%s\n");
959 p2(ifs6_in_echoreply, "\t%ju input echo repl%s\n");
960 p(ifs6_in_routersolicit, "\t%ju input router solicitation%s\n");
961 p(ifs6_in_routeradvert, "\t%ju input router advertisement%s\n");
962 p(ifs6_in_neighborsolicit, "\t%ju input neighbor solicitation%s\n");
963 p(ifs6_in_neighboradvert, "\t%ju input neighbor advertisement%s\n");
964 p(ifs6_in_redirect, "\t%ju input redirect%s\n");
965 p2(ifs6_in_mldquery, "\t%ju input MLD quer%s\n");
966 p(ifs6_in_mldreport, "\t%ju input MLD report%s\n");
967 p(ifs6_in_mlddone, "\t%ju input MLD done%s\n");
969 p(ifs6_out_msg, "\t%ju total output message%s\n");
970 p(ifs6_out_error, "\t%ju total output error message%s\n");
971 p(ifs6_out_dstunreach, "\t%ju output destination unreachable error%s\n");
972 p(ifs6_out_adminprohib, "\t%ju output administratively prohibited error%s\n");
973 p(ifs6_out_timeexceed, "\t%ju output time exceeded error%s\n");
974 p(ifs6_out_paramprob, "\t%ju output parameter problem error%s\n");
975 p(ifs6_out_pkttoobig, "\t%ju output packet too big error%s\n");
976 p(ifs6_out_echo, "\t%ju output echo request%s\n");
977 p2(ifs6_out_echoreply, "\t%ju output echo repl%s\n");
978 p(ifs6_out_routersolicit, "\t%ju output router solicitation%s\n");
979 p(ifs6_out_routeradvert, "\t%ju output router advertisement%s\n");
980 p(ifs6_out_neighborsolicit, "\t%ju output neighbor solicitation%s\n");
981 p(ifs6_out_neighboradvert, "\t%ju output neighbor advertisement%s\n");
982 p(ifs6_out_redirect, "\t%ju output redirect%s\n");
983 p2(ifs6_out_mldquery, "\t%ju output MLD quer%s\n");
984 p(ifs6_out_mldreport, "\t%ju output MLD report%s\n");
985 p(ifs6_out_mlddone, "\t%ju output MLD done%s\n");
993 * Dump PIM statistics structure.
996 pim6_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
998 struct pim6stat pim6stat, zerostat;
999 size_t len = sizeof pim6stat;
1003 memset(&zerostat, 0, len);
1004 if (sysctlbyname("net.inet6.pim.stats", &pim6stat, &len,
1005 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
1006 if (errno != ENOENT)
1007 warn("sysctl: net.inet6.pim.stats");
1013 kread(off, &pim6stat, len);
1016 printf("%s:\n", name);
1018 #define p(f, m) if (pim6stat.f || sflag <= 1) \
1019 printf(m, (uintmax_t)pim6stat.f, plural(pim6stat.f))
1020 p(pim6s_rcv_total, "\t%ju message%s received\n");
1021 p(pim6s_rcv_tooshort, "\t%ju message%s received with too few bytes\n");
1022 p(pim6s_rcv_badsum, "\t%ju message%s received with bad checksum\n");
1023 p(pim6s_rcv_badversion, "\t%ju message%s received with bad version\n");
1024 p(pim6s_rcv_registers, "\t%ju register%s received\n");
1025 p(pim6s_rcv_badregisters, "\t%ju bad register%s received\n");
1026 p(pim6s_snd_registers, "\t%ju register%s sent\n");
1031 * Dump raw ip6 statistics structure.
1034 rip6_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1036 struct rip6stat rip6stat;
1040 len = sizeof(rip6stat);
1042 if (sysctlbyname("net.inet6.ip6.rip6stats", &rip6stat, &len,
1044 if (errno != ENOENT)
1045 warn("sysctl: net.inet6.ip6.rip6stats");
1049 kread(off, &rip6stat, len);
1051 printf("%s:\n", name);
1053 #define p(f, m) if (rip6stat.f || sflag <= 1) \
1054 printf(m, (uintmax_t)rip6stat.f, plural(rip6stat.f))
1055 p(rip6s_ipackets, "\t%ju message%s received\n");
1056 p(rip6s_isum, "\t%ju checksum calculation%s on inbound\n");
1057 p(rip6s_badsum, "\t%ju message%s with bad checksum\n");
1058 p(rip6s_nosock, "\t%ju message%s dropped due to no socket\n");
1059 p(rip6s_nosockmcast,
1060 "\t%ju multicast message%s dropped due to no socket\n");
1062 "\t%ju message%s dropped due to full socket buffers\n");
1063 delivered = rip6stat.rip6s_ipackets -
1064 rip6stat.rip6s_badsum -
1065 rip6stat.rip6s_nosock -
1066 rip6stat.rip6s_nosockmcast -
1067 rip6stat.rip6s_fullsock;
1068 if (delivered || sflag <= 1)
1069 printf("\t%ju delivered\n", (uintmax_t)delivered);
1070 p(rip6s_opackets, "\t%ju datagram%s output\n");
1075 * Pretty print an Internet address (net address + port).
1076 * Take numeric_addr and numeric_port into consideration.
1078 #define GETSERVBYPORT6(port, proto, ret)\
1080 if (strcmp((proto), "tcp6") == 0)\
1081 (ret) = getservbyport((int)(port), "tcp");\
1082 else if (strcmp((proto), "udp6") == 0)\
1083 (ret) = getservbyport((int)(port), "udp");\
1085 (ret) = getservbyport((int)(port), (proto));\
1089 inet6print(struct in6_addr *in6, int port, const char *proto, int numeric)
1091 struct servent *sp = 0;
1095 sprintf(line, "%.*s.", Wflag ? 39 :
1096 (Aflag && !numeric) ? 12 : 16, inet6name(in6));
1097 cp = index(line, '\0');
1098 if (!numeric && port)
1099 GETSERVBYPORT6(port, proto, sp);
1100 if (sp || port == 0)
1101 sprintf(cp, "%.15s", sp ? sp->s_name : "*");
1103 sprintf(cp, "%d", ntohs((u_short)port));
1104 width = Wflag ? 45 : Aflag ? 18 : 22;
1105 printf("%-*.*s ", width, width, line);
1109 * Construct an Internet address representation.
1110 * If the numeric_addr has been supplied, give
1111 * numeric value, otherwise try for symbolic name.
1115 inet6name(struct in6_addr *in6p)
1118 static char line[50];
1120 static char domain[MAXHOSTNAMELEN];
1121 static int first = 1;
1123 if (first && !numeric_addr) {
1125 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
1126 (cp = index(domain, '.')))
1127 (void) strcpy(domain, cp + 1);
1132 if (!numeric_addr && !IN6_IS_ADDR_UNSPECIFIED(in6p)) {
1133 hp = gethostbyaddr((char *)in6p, sizeof(*in6p), AF_INET6);
1135 if ((cp = index(hp->h_name, '.')) &&
1136 !strcmp(cp + 1, domain))
1141 if (IN6_IS_ADDR_UNSPECIFIED(in6p))
1147 inet_ntop(AF_INET6, (void *)in6p, ntop_buf,